Selectable one-way clutch with torque independent release elements

Abstract

A one-way clutch includes a clutch body and a body bore. The clutch plate stack includes a first clutch plate, a second clutch plate, and a third clutch plate secured to the clutch body. The second clutch plate rotates axially on the longitudinal axis. The first clutch plate includes a first strut cavity and the second clutch plate includes a second strut cavity. A forward strut is rotatably connected to the second clutch plate and biased toward the first clutch plate. When positioned in the first strut cavity, the positive strut defines a clutch engaged position that prevents rotation of the second clutch plate in the first rotational direction and permits rotation in the second rotational direction. A counter-strut slidably disposed in the post hole extends through the third clutch plate, the counter-strut is partially positioned in the second post cavity and is displaced in the post hole during rotation of the second clutch plate .

Description

technical field [0001] The present disclosure relates to torque transmitting devices that are selectively engaged to achieve multiple gear ratios and forward and reverse operation in automotive transmissions. Background technique [0002] The statements in this section are intended merely to provide background information related to the present disclosure and may or may not constitute prior art. [0003] A multi-speed transmission may use a combination of clutches, planetary gearing, and fixed interconnections to achieve multiple gear ratios. In one example, friction clutches are used in a transmission and are selectively engaged to achieve a particular gear ratio. However, friction clutches often create drag when there is relative motion between the clutch input and output members when disengaged, which can result in reduced fuel economy. [0004] In an effort to improve fuel economy, a one-way clutch may optionally be employed instead of a friction clutch to transfer pow...

AI Technical Summary

Problems solved by technology

However, freewheeling known one-way clutches either decouples the driven member from the drive member, making engine braking impossible, or the spring-biased struts used to provide one-way rotation may be too tight, preventing coupling from condition release

Therefore, engine braking in vehicles operated with known one-way clutches is ineffective unless additional components are included, such as an additional member activated to selectively decouple the drive member from the driven member

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